Fig. 5.—

Intron losses and RNA editing patterns in atp1 of selected taxa of the Pteridaceae. Phylogenetic relationships as determined (fig. 3) and the events of intron losses (open triangles) are shown with the simplified cladogram on top. Species without atp1i361g2 are shaded in grey. Acrostichum aureum has only one editing site downstream of the intron insertion site. In the intron-less species Pteris argyraea and Actiniopteris dimorpha no reduction of RNA editing sites is observed. Editing sites of Coniogramme japonica are predicted.